A hacker after your car can do anything from turning the steering wheel, disabling the brakes, enabling a microphone to hear your conversations, messing with tire pressure systems and intercepting other wireless signals - all pretty scary stuff.

So, I'll get right to it. The most vulnerable cars to hackers are:

2014 Jeep Cherokee

2015 Cadillac Escalade

2014 Toyota Prius

Meanwhile, the safest cars are:

Dodge Viper

Audi A8

Honda Accord

This is all according to security researchers Charlie Miller and Chris Valasek, who plan on revealing their findings in more detail this week at the Black Hat Conference in Las Vegas.

It looks like the auto industry has its work cut out for it. With a development cycle lasting a few years, cars and their technology are falling behind. Stay tuned to what's Happening Now for all the developments on the issue coming out of the Black Hat Conference.